Improvement in the mode of evaporating liquids



r UNITED STATES PATENT @Erica WILLIAM IInNnY, or La ronrn, INDIAI n.

|MPROVEMENT INTHE MODE 0F EvAPoRATINeLlQUlDs.

Specification forming part of Letters Patent No. 1.061. ydated January8, 1839.

To aZZw/"Lom it 11i/ay con/cern:

Be it known that I, WILLIAM HENEY, ofv La Porte, in the county of LaPorte'and State of Indiana, have made a new and useful improvement,being a speedy method of evaporating liquids and lessening the expenseof the process, which is described as follows, reference being had tothe annexed drawings, making part of this speciiication.

The nature of this improvement consists in so rarefying the air in theboiling-apartment by means of iires lighted therein at' the back,creating astrong draft through a flue or flues above the iires, whicheonducts off the steam rapidly from the surface of the liquid in theboiler, causes the evaporation to go on more expeditiously thanheretofore, removes the inconvenience and nuisance arising from thesteam in the manufactory, saves fuel, lessens the number of boilersrequired, and improves the quality of the sugar, salt, or other articlemanufactured.

Figure l represents the front of the boilingapartment. Fig. 2 representsthe back of said apartment.

A is the boilingapartment; B, the boilers in which the liquid is boiled;C, the fire-place at the back of the boiling-apartment, of which theremay be one or more, and in which the additional fires are made; D, doorsof the replace; E, grate; F, ash-pit, which also serves to admit air totherre above; G, door forA closing the front of the`ash-pit whenrequired; H, the chimney above the fire-place, in which a iiue isconstructed for creating a draft for carrying off the smoke from the resand the steam from the boilers, which it will draw rapidly from thesurface of the liquid; I, door of the furnace.

When the fuel can be had of a dry and inflammable naturedit would bebetter to have the air admitted at the front and pass off with the steamover the boilers to the fire at the back through the flue, in which casethe doors D and G at the back must be closed.

If any sugar, or salt, or other manufacturer carrying on his businessextensively should still further wish to shorten the time or process ofmanufacturing, he can do so by adding another fire-place in the spacebehind the boilers and increasing the fires in them, he can regulate thetime of boiling entirely to his-wish, and can effect a great saving offuel, for every pound of wood or coals used in rarefying the air behindthe boilers in the kboilingchamber will save more than four times itsquantity used in the furnace under them.

Besides the before-mentioned advantages to be derived from thisinvention for producing quick evaporations, there might be mentioned Iseveral others, such as the beautiful crystals the juice becomingtainted or acid before itl can be exposed to the fire, for the purestcanejuice will not remain twenty minutes in the receiver withoutfermenting.

Cane -juice, after being pressed from the cane, almost immediatelycommences an acid fermentation, which soon destroys thesaccha rinematter and renders it uniit for making sugar, and although boiling andlime nearly stops that great inclination to turn acid, yet it does notso entirely stop it as lto be most de sirable to convert the juice in asshort a period as possible into sugar.

The sweet or saccharine matter remaining for a long time in a hot andfluid state incor porates the molasses and sugar together, so that thesugar will never granulate or crystallize perfectly nor part freely withits molasses after a long process of boiling.

The method of evaporation by rareiedsteam ventilators will be aconsiderable saving in the wear of boilers, as in this method as muchwill be boiled in two hours as heretofore in three with the same boilersset in the usual manner.

rlhis apparatus requires no alteration of boilers or any appurtenancebelonging to them. Its principal recommendations are simplicity andcheapness and the ease with which it ca be carried on.

Le A 1,061

In e great many eases this method will en- The before-described methodof evaporatable planters that had to use two sets of boiling liquids byrarefyingthe air in the boi1ing ers to take od their crops in one7 andeooniooms, as before described.

sequent saving of six or seven Working hands WILLIAM HENEY. in thebusiest time of the year. Witnesses:

The invention claimed and desired to be sen WM. P.' ELLIOT, cured byLetters Petenteonsists in*- EDMUND MAHER.

